{"product_id":"carrier-ph13pb04800gaaaa-pressure-switch-1vlc9v","title":"OEM Carrier High \u0026 Low Pressure Switch Kit for PH13PB04800GAAAA","description":"\u003ch1\u003eOEM Carrier High \u0026amp; Low Pressure Switch Kit (312926-252 \/ 312926-258) for Model PH13PB04800GAAAA\u003c\/h1\u003e\u003cp\u003eThese are the factory OEM pressure switches specified for the \u003cstrong\u003eCarrier PH13PB04800GAAAA\u003c\/strong\u003e heat pump. The \u003cstrong\u003ehigh pressure switch (312926-252)\u003c\/strong\u003e monitors refrigerant discharge pressure and cuts the compressor when pressure exceeds safe limits — protecting the compressor from catastrophic failure. The \u003cstrong\u003elow pressure switch (312926-258)\u003c\/strong\u003e monitors suction-side pressure and shuts down operation during low-charge or low-airflow conditions. Together, they form the primary refrigerant-side safety circuit. When either switch fails or trips without resetting, the system will lock out, display a fault code, or refuse to start — leaving the unit blowing unconditioned air.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs — High Pressure Switch (312926-252):\u003c\/strong\u003e 670 PSI cut-out \/ 470 PSI cut-in | Normally closed | SPST | R-410A compatible | Factory Authorized Part\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs — Low Pressure Switch (312926-258):\u003c\/strong\u003e 55 PSI cut-out \/ 23 PSI cut-in | Normally closed | SPST | R-410A compatible | Factory Authorized Part\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e Genuine Carrier OEM switches are factory-calibrated to exact cut-in\/cut-out tolerances. Off-brand alternatives frequently deviate from spec, causing nuisance trips or — worse — failing to trip under true over-pressure conditions, risking compressor damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Refrigerant circuit work must be performed by an EPA 608-certified technician. Tools needed: manifold gauge set, 1\/4\" nut driver, needle-nose pliers, multimeter. Always recover refrigerant before opening the refrigerant circuit; verify switch continuity before reconnecting power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty on both switches. Ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as direct OEM replacements for the \u003cstrong\u003eCarrier PH13PB04800GAAAA\u003c\/strong\u003e 4-ton heat pump. Verify cut-in\/cut-out pressure ratings on your unit's wiring diagram or data plate before ordering. Not sure which switch you need? Our HVAC parts specialists can confirm fitment — contact us before you order and we'll get you the right part the first time.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641844519283,"sku":"CARRIE-PH13PB04800GAAAA-PRESSURE_SWITCH-312926-252","price":42.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641844552051,"sku":"CARRIE-PH13PB04800GAAAA-PRESSURE_SWITCH-312926-252-GEN","price":37.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-312926-252_40305ee5-0e60-41ce-a970-eae52423f4d7.jpg?v=1775033043","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph13pb04800gaaaa-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}